watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:11055] Modules linked in: irq event stamp: 3264661 hardirqs last enabled at (3264660): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3264661): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3246488): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (3246491): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 11055 Comm: syz-executor.4 Not tainted 6.2.0-rc3-next-20230111 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x1c2/0x2130 Code: 8d 43 ff 39 c6 0f 83 8c 15 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 a8 f1 49 86 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 28 RSP: 0018:ffff88806ce09638 EFLAGS: 00000216 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 00000000000015a2 RSI: 00000000000015a2 RDI: ffffffff864a4830 RBP: ffff88806ce09710 R08: ffffffff860ea302 R09: ffffffff860ea306 R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffff88806ce096f9 R13: ffff88806ce09718 R14: ffff88806ce096b8 R15: ffffffff8115a204 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fccff87c718 CR3: 000000001938e000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x172/0x300 __create_object+0x3d/0xc40 __kmem_cache_alloc_node+0x1ed/0x2f0 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3d9/0x13c0 ieee80211_beacon_get_tim+0x99/0x540 mac80211_hwsim_beacon_tx+0x1d2/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unmap_page_range+0x2192/0x2c90 Code: 8b 94 24 88 00 00 00 48 8b 34 24 4c 89 e9 48 8b 7c 24 50 e8 a0 9a ff ff e9 0d fb ff ff e8 86 d6 db ff 48 8b 84 24 98 00 00 00 <48> c1 e8 03 80 3c 28 00 0f 85 6d 02 00 00 49 8b 45 08 bf 01 00 00 RSP: 0018:ffff888016907700 EFLAGS: 00000293 RAX: ffffea0000f383c8 RBX: 0000000000000006 RCX: 0000000000000000 RDX: ffff8880413d3580 RSI: ffffffff816d9fca RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801ea543f0 R13: ffffea0000f383c0 R14: ffffea0000f383f0 R15: ffff888016907ad8 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x225/0x370 exit_mmap+0x158/0x6a0 mmput+0xd5/0x390 do_exit+0x99b/0x2780 do_group_exit+0xd4/0x2a0 get_signal+0x2255/0x2390 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0xf5/0x190 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f1d49790b19 Code: Unable to access opcode bytes at 0x7f1d49790aef. RSP: 002b:00007f1d46d06188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000008 RBX: 00007f1d498a3f60 RCX: 00007f1d49790b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007f1d497eaf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffbc84fa8f R14: 00007f1d46d06300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 11071 Comm: syz-executor.2 Not tainted 6.2.0-rc3-next-20230111 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:rcu_is_watching+0x3b/0xb0 Code: 6b b6 0e 03 48 c7 c3 80 4f 03 00 48 ba 00 00 00 00 00 fc ff df 89 c0 48 8d 3c c5 c0 f8 2a 85 48 89 f9 48 c1 e9 03 80 3c 11 00 <75> 62 48 03 1c c5 c0 f8 2a 85 48 b8 00 00 00 00 00 fc ff df 48 89 RSP: 0018:ffff88806cf092b0 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 0000000000034f80 RCX: 1ffffffff0a55f19 RDX: dffffc0000000000 RSI: 0000000000010105 RDI: ffffffff852af8c8 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff85d0f657 R10: fffffbfff0ba1eca R11: 0000000000000001 R12: 0000000000000001 R13: ffff88806cf096a8 R14: 1ffff1100d9e126e R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559bbd13d9f8 CR3: 000000000ea2e000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rcu_read_lock_sched_held+0x24/0x80 trace_rcu_utilization+0x12c/0x190 rcu_sched_clock_irq+0xd6/0x21b0 update_process_times+0x118/0x190 tick_sched_handle+0x9b/0x180 tick_sched_timer+0xf6/0x120 __hrtimer_run_queues+0x17f/0xcb0 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x510 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_next_frame+0x159d/0x2130 Code: 0f 85 cf 09 00 00 49 0f bf 00 48 01 44 24 18 e9 31 f1 ff ff 48 b8 00 00 00 00 00 fc ff df 48 8b 14 24 48 c1 ea 03 80 3c 02 00 <0f> 85 0c 06 00 00 49 8d 7e 08 49 8b 5e 48 48 b8 00 00 00 00 00 fc RSP: 0018:ffff88806cf09750 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 0000000000000002 RDX: 1ffff1100d9e130d RSI: ffff88806cf097f0 RDI: ffff88806cf09870 RBP: ffff88806cf098b8 R08: ffffffff86059b34 R09: ffffffff86059b38 R10: ffffed100d9e1311 R11: ffff88806cf09860 R12: ffff88806cf09861 R13: ffff88806cf09880 R14: ffff88806cf09820 R15: 0000000000000001 __unwind_start+0x513/0x7c0 arch_stack_walk+0x63/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x3b4/0xc40 kmem_cache_alloc_node+0x215/0x310 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:finish_task_switch.isra.0+0x237/0x8a0 Code: 89 ff 48 c7 03 00 00 00 00 e8 65 65 22 03 4d 85 e4 75 ba 4c 89 ff e8 a8 40 22 03 e8 13 67 2e 00 fb 65 48 8b 1c 25 80 89 03 00 <48> 8d bb f0 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffff888045577560 EFLAGS: 00000202 RAX: 0000000000161167 RBX: ffff888008ef9ac0 RCX: ffffffff812b79df RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff8880455775a0 R08: 0000000000000001 R09: ffffffff8765592f R10: fffffbfff0ecab25 R11: 0000000000000001 R12: ffff88806cf39318 R13: ffff888008d81ac0 R14: ffff888008ef9f70 R15: ffff88806cf39300 __schedule+0xbb8/0x2b20 preempt_schedule_common+0x45/0xc0 __cond_resched+0x1b/0x30 unmap_page_range+0xd7d/0x2c90 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x225/0x370 exit_mmap+0x158/0x6a0 mmput+0xd5/0x390 do_exit+0x99b/0x2780 do_group_exit+0xd4/0x2a0 get_signal+0x2255/0x2390 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0xf5/0x190 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fb79382eb19 Code: Unable to access opcode bytes at 0x7fb79382eaef. RSP: 002b:00007fb790d83188 EFLAGS: 00000246 ORIG_RAX: 0000000000000100 RAX: 0000000000000000 RBX: 00007fb793942020 RCX: 00007fb79382eb19 RDX: 0000000020000000 RSI: 0000000000000009 RDI: 0000000000000000 RBP: 00007fb793888f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2281e15f R14: 00007fb790d83300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 8d 43 ff lea -0x1(%rbx),%eax 3: 39 c6 cmp %eax,%esi 5: 0f 83 8c 15 00 00 jae 0x1597 b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 12: fc ff df 15: 89 f2 mov %esi,%edx 17: 48 8d 3c 95 a8 f1 49 lea -0x79b60e58(,%rdx,4),%rdi 1e: 86 1f: 48 89 f9 mov %rdi,%rcx 22: 48 c1 e9 03 shr $0x3,%rcx 26: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx * 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 c8 cmp %cl,%al 35: 7c 27 jl 0x5e 37: 84 c9 test %cl,%cl 39: 74 23 je 0x5e 3b: 48 89 54 24 28 mov %rdx,0x28(%rsp)